Photonics and LED Lighting News

Graphene phase modulators hold the key to faster mobile technology

Researchers from Graphene Flagship Partners at the National Inter-University Consortium for Telecommunications (CNIT) in Italy, IMEC in Belgium and University of Cambridge in UK created and tested a graphene based phase modulator that outperforms existing silicon based ones.

Posted on 20 August 2018 | 2:52 pm

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If you are looking to take on competition and beat them with the best moves then you need to have a strong online presence because without that you will not be able to grow your business today. If you want to establish a strong online presence then you need to make sure that your business ...

Posted on 19 August 2018 | 2:06 pm

Hire The Best Cars In Town

There are various reasons why renting a car turns out to be the most convenient solution. If you are visiting a new city and you do not want to depend on unreliable taxi services then renting a car from toronto car rental is definitely the best solution available in the market. While some people believe ...

Posted on 19 August 2018 | 10:52 am

Play Online, Exercise Your Mind

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Posted on 18 August 2018 | 11:04 am

Narrow-beam laser technology enables communications between underwater vehicles

Nearly five years ago, NASA and Lincoln Laboratory made history when the Lunar Laser Communication Demonstration (LLCD) used a pulsed laser beam to transmit data from a satellite orbiting the moon to Earth—more than 239,000 miles—at a record-breaking download speed of 622 megabits per second.

Posted on 17 August 2018 | 12:52 pm

New ultrathin optic cavities allow simultaneous color production on an electronic chip

The rainbow is not just colors—each color of light has its own frequency. The more frequencies you have, the higher the bandwidth for transmitting information.

Posted on 16 August 2018 | 10:00 pm

Physicists fight laser chaos with quantum chaos to improve laser performance

To tame chaos in powerful semiconductor lasers, which causes instabilities, scientists have introduced another kind of chaos.

Posted on 16 August 2018 | 6:00 pm

Optical pressure detector could improve robot skin, wearable devices and touch screens

A new type of pressure sensor based on light could allow the creation of sensitive artificial skins to give robots a better sense of touch, wearable blood-pressure monitors for humans and optically transparent touch screens and devices.

Posted on 14 August 2018 | 2:43 pm

Advantages of Having a Maid

Getting a maid is one of the trickiest jobs that you could do. This is because while anyone can do the simplest of chores, it also matter that you are able to trust a person, given that you are letting a total stranger into what should be a private space for most of the time. ...

Posted on 14 August 2018 | 9:44 am

Terahertz technology creates new insight into how semiconductor lasers work

Lasers are widely used as high power sources of light operating at a specific frequency. But how does this frequency get selected when a laser is turned on, and how quickly?

Posted on 13 August 2018 | 4:56 pm

Novel optics for ultrafast cameras create new possibilities for imaging

MIT researchers have developed novel photography optics that capture images based on the timing of reflecting light inside the optics, instead of the traditional approach that relies on the arrangement of optical components. These new principles, the researchers say, open doors to new capabilities for time- or depth-sensitive cameras, which are not possible with conventional photography optics.

Posted on 13 August 2018 | 3:00 pm

Secure Your Payments With Digital Currency

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Posted on 13 August 2018 | 2:16 pm

Use Reliable Online Converters To Download Youtube Videos To MP3

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Posted on 12 August 2018 | 5:12 am

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Posted on 10 August 2018 | 10:02 am

World's fastest 3-D tomographic images reported at BESSY II

An HZB team has developed an ingenious precision rotary table at the EDDI beamline at BESSY II and combined it with particularly fast optics. This enabled them to document the formation of pores in grains of metal during foaming processes at 25 tomographic images per second—a world record.

Posted on 9 August 2018 | 9:57 am

Team shows laser ranging can 'see' 3-D objects melting in fires

Researchers at the National Institute of Standards and Technology (NIST) have used a laser detection and ranging (LADAR) system to image three-dimensional (3-D) objects melting in flames. The method could offer a precise, safe and compact way to measure structures as they collapse in fires.

Posted on 8 August 2018 | 6:53 pm

Cbd Hemp Oil Is Actually Good For You

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Posted on 8 August 2018 | 4:42 pm

Unlimited Movies Now Streaming On Your Smartphone

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Posted on 8 August 2018 | 7:46 am

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Posted on 7 August 2018 | 5:46 pm

Machine learning technique reconstructs images passing through a multimode fiber

Through innovative use of a neural network that mimics image processing by the human brain, a research team reports accurate reconstruction of images transmitted over optical fibers for distances of up to a kilometer.

Posted on 7 August 2018 | 2:34 pm

Switchable plasmonic routers controlled by external magnetic fields by using magneto-plasmonic waveguides

Plasmonic waveguides open the possibility to develop dramatically miniaturized optical devices and provide a promising route towards the next generation of integrated nanophotonic circuits for information processing, optical computing and others. Key elements of nanophotonic circuits are switchable plasmonic routers and plasmonic modulators.

Posted on 7 August 2018 | 10:51 am

Scientists register strong toroidal dipole response in wide frequency range

Physicists have managed to create an experimental structure with a strong toroidal dipole response of the electromagnetic field over a wide frequency range. This response is associated with a special configuration of electromagnetic currents causing high concentration of the field. A special dielectric metal lattice was created to produce and measure the response. The results can be used to create non-scattering materials, as well as to control electromagnetic fields. The research was published in Advanced Optical Materials.

Posted on 6 August 2018 | 2:52 pm

Scientists find holes in light by tying it in knots

A research collaboration including theoretical physicists from the University of Bristol and Birmingham has found a new way of evaluating how light flows through space—by tying knots in it.

Posted on 1 August 2018 | 3:14 pm

Problem in exciton-polariton physics resolved using novel method

Researchers at ANU recently proved a novel method for generating orbital angular momentum states (vortices), with a topological charge that is ensured by an exceptional point.

Posted on 1 August 2018 | 12:20 pm

On-chip optical filter processes wide range of light wavelengths

MIT researchers have designed an optical filter on a chip that can process optical signals from across an extremely wide spectrum of light at once, something never before available to integrated optics systems that process data using light. The technology may offer greater precision and flexibility for designing optical communication and sensor systems, studying photons and other particles through ultrafast techniques, and in other applications.

Posted on 1 August 2018 | 9:00 am

Physicists develop improved algorithms for simulating how complex molecules respond to excitation by photons

What makes it possible for our eyes to see? It stems from a reaction that occurs when photons come into contact with a protein in our eyes, called rhodopsin, which adsorbs the photons making up light.

Posted on 31 July 2018 | 2:11 pm

Optical fibers that can sense the materials around them

In recent years optical fibers have served as sensors to detect changes in temperature, like a thermometer, and pressure, like an artificial nerve. This technique is particularly useful in structures such as bridges and gas pipelines.

Posted on 31 July 2018 | 10:02 am

A breakthrough of monitoring energy storage at work using optical fibers

A fiber optic sensing system developed by researchers in China and Canada can peer inside supercapacitors and batteries to observe their state of charge.

Posted on 31 July 2018 | 9:54 am

Trapping light that doesn't bounce off track for faster electronics

Replacing traditional computer chip components with light-based counterparts will eventually make electronic devices faster due to the wide bandwidth of light.

Posted on 30 July 2018 | 8:01 pm

Nano-optic endoscope sees deep into tissue at high resolution

The diagnosis of diseases based in internal organs often relies on biopsy samples collected from affected regions. But collecting such samples is highly error-prone due to the inability of current endoscopic imaging techniques to accurately visualize sites of disease. The conventional optical elements in catheters used to access hard-to-reach areas of the body, such as the gastrointestinal tract and pulmonary airways, are prone to aberrations that obstruct the full capabilities of optical imaging.

Posted on 30 July 2018 | 3:00 pm

Adapting technology to image blood vessels in skin disease

Small vessel vasculitis—inflammation of the small blood vessels—appears as a stain of tiny, red dots covering the skin that, depending on the severity, can evolve into painful pustules or ulcers. In some patients, it may even reflect inflammation in internal organs.

Posted on 30 July 2018 | 11:30 am

Chip lights up optical neural network demo

Researchers at the National Institute of Standards and Technology (NIST) have made a silicon chip that distributes optical signals precisely across a miniature brain-like grid, showcasing a potential new design for neural networks.

Posted on 27 July 2018 | 2:31 pm

Researchers boost performance quality of perovskites

Solar cells are devices that absorb photons from sunlight and convert their energy to move electrons—enabling the production of clean energy and providing a dependable route to help combat climate change. But most solar cells used widely today are thick, fragile and stiff, which limits their application to flat surfaces and increases the cost to make the solar cell.

Posted on 26 July 2018 | 12:21 pm

Coupled with light—two particles are better than one

So often in life we hear that size matters, in the world of quantum physics it really does.

Posted on 25 July 2018 | 2:00 pm

Blasting tiny craters in glass, creating material to miniaturize telecommunication devices

Modern communication systems often employ optical fibers to carry signals across or between devices. The integrated optics in these devices combine more than one function into a single circuit. However, signal transmission requires long optical fibers, which makes it difficult to miniaturize the device. Instead of long optical fibers, scientists have started testing planar waveguides.

Posted on 24 July 2018 | 3:00 pm

Physicists design a nano-resonator with strong nonlinear response

An international research team has found a way to make frequency conversion of light at the nanoscale 100 times more efficient. The new method is based on isolated dielectric nanoparticles supporting so-called bound states in the continuum. Such states appear when radiating fields in the particle suppress each other, so that the electromagnetic energy inside the particle can be trapped. This prediction can be employed for a new generation of tiny frequency conversion devices called nanolasers. The research was published in Physical Review Letters on July 19, 2018.

Posted on 24 July 2018 | 10:15 am

Scientists present metamaterial for solar cells and nano-optics

A research team from the NUST MISIS Laboratory of Superconducting Metamaterials led by Alexey Basharin, Senior Lecturer and Candidate of Technical Sciences, has developed a metamaterial-dielectric that has unique characteristics and is easy to manufacture. This ease of access will allow researchers to use it to create the latest optical devices. The research results were published in Laser & Photonics Reviews.

Posted on 24 July 2018 | 10:02 am

Generation of random numbers by measuring phase fluctuations from a laser diode with a silicon-on-in

Researchers have shown that a chip-based device measuring a millimeter square could be used to generate quantum-based random numbers at gigabit per second speeds. The tiny device requires little power and could enable stand-alone random number generators or be incorporated into laptops and smart phones to offer real-time encryption.

Posted on 24 July 2018 | 4:45 am

A phonon laser operating at an exceptional point

The basic quanta of light (photon) and sound (phonon) are bosonic particles that largely obey similar rules and are in general very good analogs of one another. Physicists have explored this analogy in recent experimental investigations of a phonon laser to provide insights into a long-debated issue of how a laser—or more specifically, its line width—is affected when operated at an exceptional point (EP). Exceptional points are singularities in the energy functions of a physical system at which two light modes coalesce (combine into one mode) to produce unusual effects. Until recently, the concept mainly existed only in theory, but received renewed attention with experimental demonstrations in optical systems such as lasers and photonic structures. The experimental studies involved systems with parity-time symmetry for balanced gain and loss of material, to ensure robust light intensity, immune to backscatter. While closed and lossless physical systems are described by Hermitian operators in quantum physics, systems with open boundaries that exhibit exceptional points (EPs) are non-Hermitian.

Posted on 20 July 2018 | 2:20 pm

Researchers move closer to completely optical artificial neural network

Researchers have shown that it is possible to train artificial neural networks directly on an optical chip. The significant breakthrough demonstrates that an optical circuit can perform a critical function of an electronics-based artificial neural network and could lead to less expensive, faster and more energy efficient ways to perform complex tasks such as speech or image recognition.

Posted on 19 July 2018 | 2:30 pm